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ChemicalBook >> CAS DataBase List >>sodium methanethiosulphonate

sodium methanethiosulphonate

CAS No.
1950-85-2
Chemical Name:
sodium methanethiosulphonate
Synonyms
odium methane thiosulfonate;sodium methanethiosulphonate;SodiuM Methanethiosulfonate 95%;SODIUM METHYL-1???DISULFENOYLOLATE;Methanesulfonothioic acid, sodium salt;Methanethiosulfonic acid S-sodium salt;Methanesulfonothioic acid S-sodium salt;Methanesulfonothioic acid sodium salt, Sodium methylthiosulfonate
CBNumber:
CB9938786
Molecular Formula:
CH3NaO2S2
Molecular Weight:
134.15309
MDL Number:
MFCD03425630
MOL File:
1950-85-2.mol
MSDS File:
SDS
Last updated:2025-07-24 18:13:42

sodium methanethiosulphonate Properties

Melting point 265 °C (dec.)
storage temp. Inert atmosphere,Room Temperature
solubility DMSO (Slightly), Methanol (Slightly), Water (Slightly)
form Solid
color White to Off-White
Stability Moisture Sensitive: Desiccate
InChI InChI=1S/CH4O2S2.Na/c1-5(2,3)4;/h1H3,(H,2,3,4);/q;+1/p-1
InChIKey JFTZUZWJGUCSTE-UHFFFAOYSA-M
SMILES S(=O)(=O)(C)S[Na]
EPA Substance Registry System Methanesulfonothioic acid, sodium salt (1950-85-2)
UNSPSC Code 12352001
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26
WGK Germany  3
HS Code  2930909899

sodium methanethiosulphonate price More Price(15)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 684538 Sodium methanethiosulfonate 95% 1950-85-2 1g $91.48 2025-07-31 Buy
TRC S645000 Sodium methanethiosulfonate 1950-85-2 500mg $70 2021-12-16 Buy
TRC S645000 Sodium methanethiosulfonate 1950-85-2 2g $140 2021-12-16 Buy
Medical Isotopes, Inc. 13496 Sodium methanethiosulfonate 1950-85-2 500mg $390 2021-12-16 Buy
American Custom Chemicals Corporation ING0003064 SODIUM METHANETHIOSULFONATE 95.00% 1950-85-2 250MG $500 2021-12-16 Buy
Product number Packaging Price Buy
684538 1g $91.48 Buy
S645000 500mg $70 Buy
S645000 2g $140 Buy
13496 500mg $390 Buy
ING0003064 250MG $500 Buy

sodium methanethiosulphonate Chemical Properties,Uses,Production

Chemical Properties

White Solid

Uses

Sodium Methanethiosulfonate (cas# 1950-85-2) is a compound useful in organic synthesis.

Synthesis

Sodium methanesulfinate

20277-69-4

sodium methanethiosulphonate

1950-85-2

The general procedure for the synthesis of sodium sulfur methanesulfonate from sodium methanesulfite was as follows: a mixture of sodium methanesulfonate (5.43 g, 53 mmol) and sulfur powder (1.666 g, 52 mmol) in anhydrous methanol (310 mL) was heated and refluxed for 20 minutes until the sulfur was almost completely dissolved. The reaction mixture was filtered while hot and the filtrate was concentrated to dryness. The resulting off-white solid was stirred with a small amount of anhydrous ethanol at room temperature, filtered and concentrated again. The grinding process was repeated until the 1H NMR spectrum of the white residue showed no sodium methanethiosulfonate residue. All the filtrates were combined and evaporated to dryness to give sodium thiomethanesulfonate (5.40 g, 77% yield) as fine white acicular crystals; melting point 271-272°C (literature value: 272-273.5°C, G.L. Kenyon, T.W. Bruice, Methods Enzymol. 1977, 47, 407-430); 1H NMR ( 200 MHz, CDCl3) δ 3.18 (s, 3H, CH3); Calculated elemental analysis (C8H5NaO2S2): C 8.95, H 2.25; Measured values: C 8.86, H 2.55. An improved synthetic method for NaMTS has been successfully validated, which achieves a high yield synthesis of NaMTS through the reflux reaction of sodium sulfite with sulfur in methanol (Scheme 16, Figure 19), avoiding the cumbersome by-product isolation step in the conventional Na2SZMe3SiCl method. Although a small amount of unknown by-products was generated during the reaction, they were easily separated from NaMTS.

Purification Methods

Recrystallise the salt from H2O (plates as monohydrate) or MeOH. The potassium salt crystallises from H2O, EtOH or MeOH (thick plates) with m 201-202o [Foss Acta Chem Scand 10 868 1956]. The S-benzylisothiouronium salt has m 141-142o (from EtOH) [Kurzer & Powell J Chem Soc 3733 1952]. [Beilstein 4 IV 31.]

References

[1] Chemistry Letters, 1987, p. 2161 - 2162
[2] Patent: WO2006/55437, 2006, A2. Location in patent: Page/Page column 38; 39; sheet 23
[3] Journal of Organic Chemistry, 2005, vol. 70, # 24, p. 9740 - 9754
[4] Dalton Transactions, 2011, vol. 40, # 45, p. 12310 - 12319
[5] Journal of Organic Chemistry, 1988, vol. 53, # 2, p. 396 - 402

2386-57-4
1950-85-2
Synthesis of sodium methanethiosulphonate from SODIUM METHANESULFONATE
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View Lastest Price from sodium methanethiosulphonate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
sodium methanethiosulphonate  pictures 2025-04-04 sodium methanethiosulphonate
1950-85-2
US $0.00-0.00 / kg 1kg 98% 1Ton Henan Aochuang Chemical Co.,Ltd.
sodium methanethiosulphonate pictures 2019-07-06 sodium methanethiosulphonate
1950-85-2
US $1.00 / KG 1KG 98% 1 Career Henan Chemical Co

sodium methanethiosulphonate Spectrum

sodium methanethiosulphonate Methanesulfonothioic acid, sodium salt Methanesulfonothioic acid sodium salt, Sodium methylthiosulfonate Methanesulfonothioic acid S-sodium salt Methanethiosulfonic acid S-sodium salt odium methane thiosulfonate SodiuM Methanethiosulfonate 95% SODIUM METHYL-1???DISULFENOYLOLATE 1950-85-2 CH3O2S2Na CH3NaO2S2 MTS & Sulfhydryl Active Reagents Small molecule MTS and Sulfhydryl Active Reagents